Docker is a popular containerization technology that uses a layered file system and a container runtime to create and manage containers. Docker containers are designed to be portable and lightweight, making them easy to deploy and manage in different environments. Docker also provides a variety of tools for building, managing, and sharing container images, and has a large community of users and developers.
OpenVZ, on the other hand, is a containerization technology that uses a modified Linux kernel to create and manage containers. OpenVZ containers share the host kernel and system libraries, making them less resource intensive than traditional virtual machines. However, this also means that OpenVZ containers are less isolated than Docker containers, and there may be some compatibility issues with certain software and applications.
In terms of which is best for a Linux system, it really depends on your specific use case and requirements. Docker is generally considered to be more flexible and easier to use than OpenVZ, and is suitable for a wide range of applications and use cases. OpenVZ, on the other hand, may be more suitable for applications that require low overhead and high performance, but may have some limitations in terms of software compatibility.
Docker and OpenVZ are containerization technologies that can be used to run applications in sandbox environments on a single host system. However, they do have some differences that may make one technology more suitable than the other for certain use cases. Here are some general guidelines on when to use Docker and when to use OpenVZ:
Use Docker when:
You need to quickly and efficiently deploy applications across different environments, such as development, test, and production. You want to run multiple applications or services on the same host system and you need to make sure they are isolated from each other. You want to use a wide range of operating systems and software stacks for your applications, because Docker provides a flexible and portable platform for running and managing containers. You want to take advantage of the large and active Docker community, which provides a wealth of resources, tools, and documentation for using Docker. Use OpenVZ when: You need to run applications that require low overhead and high performance, since OpenVZ containers are designed to be lightweight and efficient. You want to run multiple instances of the same operating system and software stack on a single host system, since OpenVZ containers share the same kernel and libraries, which reduces the amount of resources required. You have a good understanding of Linux system administration and kernel tuning, as OpenVZ requires some knowledge of these topics to optimize container performance. You are running an application that is compatible with OpenVZ, as certain software and applications may have compatibility issues with OpenVZ containers. It’s worth noting that these guidelines are not exhaustive and there may be other factors to consider when choosing between Docker and OpenVZ. Ultimately, the choice will depend on your specific needs, resources, and experience, and it is important to carefully evaluate each technology before making a decision. Ultimately, the choice between Docker and OpenVZ (or any other containerization technology) will depend on your specific needs, resources, and expertise. Both technologies have their pros and cons, and it’s important to weigh them carefully before making a decision.